scholarly journals A Survey of High Performance Concrete Developments in Civil Engineering Field

2013 ◽  
Vol 03 (02) ◽  
pp. 69-79 ◽  
Author(s):  
Vatsal Patel ◽  
Niraj Shah
Keyword(s):  
High Performance ◽  
Civil Engineering ◽  
High Performance Concrete

scholarly journals REVIEW OF USE OF NANO MATERIAL IN MODIFYING THE PROPERTIES OF CONCRETE

2019 ◽  
Vol 4 ◽  
pp. 9
Author(s):  
Irfan U. Jan
Keyword(s):  
High Performance ◽  
Civil Engineering ◽  
High Performance Concrete ◽  
Biomedical Sciences ◽  
Concrete Technology ◽  
Nano Material ◽  
Promising Area ◽  
Active Research ◽  
Electronic Chemical ◽  
Modern Technologies

Modern technologies have affected all fields of human activities. Traditionally nanotechnologies deal with material having a dimension in the range of one billionth of a meter or 100 Nano meter in size. It has been widely used in natural sciences and biomedical sciences in the fields like microbiology, medicine, electronic, chemical, and materials sciences. The application of nontechnology and Nano material in Civil Engineering is still under active research in the areas of Concrete Technology, Construction management, water purification systems, Properties of Concrete at early ages and use of modern polymers in producing High Performance Concrete (HPC). The use of Nano material to produce relatively sustainable concrete represents a promising area of research in Nano material. In this paper the State of the Art of application of Nanotechnologies to Civil Engineering and its future prospects with special reference to sustainability in construction.

scholarly journals High Performance Concrete Materials with Applications in Building and Civil Engineering

2017 ◽  
Vol 2017 ◽  
pp. 1-3 ◽  
Author(s):  
Peng Zhang ◽  
Song Han ◽  
Serina Ng ◽  
Xu-Hao Wang
Keyword(s):  
High Performance ◽  
Civil Engineering ◽  
High Performance Concrete ◽  
Concrete Materials

scholarly journals Effect of added the polycarboxylate ether on slump retention and compressive strength of the high-performance concrete

2018 ◽  
Vol 195 ◽  
pp. 01020 ◽  
Author(s):  
Jonbi Jonbi ◽  
Resti Nur Arini ◽  
Basori Anwar ◽  
Mohamad Ali Fulazzaky
Keyword(s):  
Compressive Strength ◽  
High Performance ◽  
Civil Engineering ◽  
High Performance Concrete ◽  
Concrete Mixture ◽  
Concrete Sample ◽  
Strength Tests ◽  
Polycarboxylate Ether ◽  
Insight Into ◽  
Durability Of Concrete

It is well known that workability of high performance concrete (HPC) is dependent on slump value of concrete mixture. Moreover, slump retention is the most sensitive compared to a well-known slump value because it represents the durability of concrete mixture for its applications in the field of civil engineering. This research used the polycarboxylate ether (PCE) to increase slump value of concrete mixture and then verified the effect of PCE on the slump retention and compressive strength of different high-performance concretes. 0%, 0.5%, 1%, 2% of PCE were added into concrete mixture to yield a minimum compressive strength of f’c 50 MPa. The slump retention tests were performed at 0, 15, 30, 45, 60 and 75 minutes while the compressive strength tests were carried out at 3, 7, 14 and 28 days for every concrete sample. The result findings showed that the optimal concrete performance can be achieved by adding 2% of PCE to reach at a slump retention value of 45 minutes and a compressive strength of 53.84 MPa. Effect of PCE on the slump retention and compressive strength has been verified to contribute an insight into the application of a proper designed workability of HPC.

scholarly journals Use of Fiber Brag Gating Sensors in civil engineering applications

2021 ◽  
Author(s):  
Zahra Yazdizadeh
Keyword(s):  
High Performance ◽  
Civil Engineering ◽  
Prediction Models ◽  
High Performance Concrete ◽  
Shrinkage Strain ◽  
Second Phase ◽  
Engineering Applications ◽  
Fbg Sensors ◽  
Important Time ◽  
Creep And Shrinkage

This research presents an overview of development and application of Fiber Bragg Grating sensors (FBG) technology in civil engineering applications. The primary focus of this research is the use of FBGs to investigate two most important time-dependent properties of concrete namely: creep strain and shrinkage strain. The first phase of this investigation is focused on using FBG sensors to measure the concrete strains in unreinforced concrete beams and cylinders to determine modulus of elasticity, the modulus of rapture and fracture energy of concrete. The second phase of this research is designed to investigate the creep and shrinkage using FBG sensors. Normal strength concrete (NC), High performance concrete (HPC) and ultra-high performance (UHPC) specimens’ are used to measure creep and shrinkage strains and to compare the values with typical prediction models. The measured creep and shrinkage strains are compared to four different models to determine which model is the most accurate.

A universal UHPC shell element for consideration of future building with precast elements

2019 ◽  
Author(s):  
Michael Olipitz
Keyword(s):  
High Performance ◽  
Essential Role ◽  
Planning Process ◽  
Civil Engineering ◽  
High Performance Concrete ◽  
Sustainable Use ◽  
Shell Element ◽  
Engineering Structures ◽  
The Future ◽  
Precast Elements

<p>This article describes a technology of UHPC-precast elements (Ultra High Performance Concrete) from the idea to the concrete implementation and shows different possible applications. The development steps of the precast elements relate on the one hand the manufacturing up to the series product and on the other hand the joining technique of the elements. UHPC-prefabricated parts are joined using steel components. The bolted and/or tightened connections of the elements implement a later disassembly and thus a very sustainable use of UHPC- components in the sense of urban mining. The applications concern some examples of architectural objects where the first experiences with the production of UHPC-precast elements were made and which are shown in this article as an example. In the future UHPC-precast elements will play an important role in the field of civil engineering. A concrete prototype will be described and further developments will be shown. In civil engineering, in addition to the aspect of durability, the aesthetics, that results from the construction, play an essential role. It is therefore essential for the planning process of civil engineering structures to consider nature, ethics and aesthetics as equal value properties. The applications of UHPC- precast elements for building constructions are currently limited due to lower durability requirements. However ways are shown that allow meaningful applications. An economic application is given only when considering the overall life cycle. The aesthetics resulting from material-appropriate planning plays an essential role. In the future the consideration of good design will lead to creative construction products such as a universal shell element, which meets all the requirements of sustainable constructions.</p>

scholarly journals Use of Fiber Brag Gating Sensors in civil engineering applications

2021 ◽  
Author(s):  
Zahra Yazdizadeh
Keyword(s):  
High Performance ◽  
Civil Engineering ◽  
Prediction Models ◽  
High Performance Concrete ◽  
Shrinkage Strain ◽  
Second Phase ◽  
Engineering Applications ◽  
Fbg Sensors ◽  
Important Time ◽  
Creep And Shrinkage

This research presents an overview of development and application of Fiber Bragg Grating sensors (FBG) technology in civil engineering applications. The primary focus of this research is the use of FBGs to investigate two most important time-dependent properties of concrete namely: creep strain and shrinkage strain. The first phase of this investigation is focused on using FBG sensors to measure the concrete strains in unreinforced concrete beams and cylinders to determine modulus of elasticity, the modulus of rapture and fracture energy of concrete. The second phase of this research is designed to investigate the creep and shrinkage using FBG sensors. Normal strength concrete (NC), High performance concrete (HPC) and ultra-high performance (UHPC) specimens’ are used to measure creep and shrinkage strains and to compare the values with typical prediction models. The measured creep and shrinkage strains are compared to four different models to determine which model is the most accurate.

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